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Finding the Fourth Proportional to 393.39, 589.57 and 162.01

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Solution

The fourth proportional to 393.39, 589.57 and 162.01 is: 242.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    393.39 : 589.57 = 162.01 : x
  2. Step 2: Convert to fraction form
    393.39/589.57 = 162.01/x
  3. Step 3: Cross multiply
    393.39x = 589.57 × 162.01
  4. Step 4: Simplify right side
    393.39x = 95,515.43
  5. Step 5: Solve for x
    x = 95,515.43/393.39
  6. Step 6: Final answer
    x = 242.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.